<template>
  <div class="icons">

    <swiper :options="swiperOptions" v-if="showSwiper">
      <swiper-slide v-for="(page,index) of pages"
      :key="index">
        <div class="icon" v-for="item of page"
          :key="item.id">
          <div class="icon-img">
            <img class="icon-img-content" :src="item.imgUrl"/>
          </div>
          <p class="icon-desc">{{item.desc}}</p>
        </div>
      </swiper-slide>

     </swiper>

  </div>
</template>

<script>
export default {
  name: 'HomeIcons',
  props: {
    list: Array
  },
  data: function () {
    return {
      swiperOptions: {
        loop: true
      }
    }
  },
  // 计算属性
  computed: {
    pages () {
      const pages = []
      this.list.forEach((item, index) => {
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    },
    showSwiper () {
      return this.list.length
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  @import '~styles/mixins.styl'
.icons
  margin-top :.1rem
  overflow hidden
  height :0
  padding-bottom : 50%
  .icon
    position :relative
    overflow hidden
    float :left
    width :25%
    padding-bottom 25%
    .icon-img
      position :absolute
      top :0
      left :0
      right :0
      bottom :.44rem
      box-sizing :border-box
      padding :.1rem
      .icon-img-content
        display :block
        margin :0 auto
        height :100%
    .icon-desc
      position :absolute
      left :0
      right :0
      bottom :0
      height :.44rem
      line-height :.44rem
      color:$darkTextColor
      text-align :center
      ellipsis()
</style>
